Adjustable furniture.



No. 687,675. Patented Nov. 26, l90l.

W. B. CUGGER.

ADJUSTABLE FURNITURE.

(Application filed Jan. 2, 1901.)

(No Model.)

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\VILLIAM B. COGGER, OF SPRINGFIELD, ILLINOIS.

ADJUSTABLE FURNITURE.

SPECIFICATION forming part of Letters Patent No. 687,675, dated November26, 1901.

. Application filed January 2,1901. Serial No. 41,924. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM B. COGGER, a citizen of the UnitedStates,residing at Springfield, in the county of Sangamon and State ofIllinois, have invented a new and useful Improvement in AdjustableFurniture, of which the following is a specification, reference beinghad to the accompanying drawings, in which-- Figure 1 is a horizontalsectional view showing the clamping and adjusting mechanism. Fig. 2 is asectional View on line A A, Fig. 1.

Figs. 3, 4, and 5 are details hereinafter referred to.

My invention relates to improvements in adjustable furniture; and theobject of my invention is to provide a readily-accessible means ofadjusting articles of furniture.

One feature of my invention is the means adopted for securing the pinionto the shaft. The hollow shaft upon which is mounted the pinion isformed with a keyway, and the pinion is formed with keys or lugs whichengage in these keyways.

Another feature of my invention lies in the means adopted to turn theshaft upon which the pinion is mounted. The washer which lies betweenthe clamping-nut and the standard is polygonal in outline and is securedto the adjustingshaft by means of keys formed on the inside of thewasher engaging in keyways formed on the shaft. The washer being on theoutside of the standard is readily accessible to be engaged by a wrench,and when the washer is turned the shaft turns with it to operate theadjusting mechanism.

In the drawings illustrating the principle of my invention and the bestmode now known to me of applying that principle, a represents thesupporting-standards,which are secured to the floor, and b the bracketmembers, secured to the article of furniture. (Not shown.) J ournaled inthe standards a. is a hollow shaft 0, formed with keyways d, in whichengage the lugs e, which are formed on the inside of the pinions f. (SeeFig. 5.) The pinions f engage toothed racks 9, (see Fig. 2,)forrned onthe brackets 12, so that by the rotation of the shaft 0 the brackets bare raised or lowered. To rotate the shaft 0, I provide the washers 7Lwith lugs i, which engage the keyways d on the shaft 0, and make thewashers polygonal in outline, so that they may be readily engaged by awrench. (See Figs. 3 and 4:.) Extending through the shaft 0 is a bolt7', screwed on the ends of which are the nuts 7r. When the nuts arescrewed up tight, the stress tending to force the standards together istaken up by the shaft c, which acts as an abutment between the standards(1. Again, when the nuts it are screwed up any wear between the rubbingsurfaces is taken up.

What I claim i s- 1. In adjustable furniture, the combination of anadjusting-shaft with means for the rotation of said shaft; said meanscomprising a washer having its surface constructed to en'- gage a wrenchand secured to said shaft by a key on the one engaging akeyway in theother.

2. In adjustable furniture, the combination of an adjusting-shaft withmeans for the rotation of said shaft; said means comprising a washerpolygonal in outline and secured to said shaft by a key on the oneengaging a keyway in the other.

3. In adjustable furniture, the combination of an adjusting shaft; apinion secured to said shaft by a key on the one engaging akeyway in theother; and means to rotate said shaft; said means comprising a washersecured to said shaft by a key on the one engaging a key way in theother, and having its surface constructed to engage a wrench.

4. In adjustable furniture, the combination of supporting-standards; ashaft journaled in said standards; clamping means; and washersinterposed between said clamping means and said standards; said washersbeing secured to said shaft by a spline-and-groove connection andthereby adapted to rotate said shaft.

5. In adjustable furniture, the combination of supporting standards; ahollow shaft journaled in said standards; a bolt extending through saidshaft; nuts on the ends of said bolt; and washers interposed betweensaid nuts and said standards; said washers being secured to said shaftby a spline-and-groove connection and thereby adapted to rotate saidshaft.

6. In adjustable furniture, the combination of supporting-standards ashaft journaled in said standards; pinions secured on said shaft by aspline and-groove connection; the spline on the pinion abutting againstthe inner wall of the groove in the shaft; brackets formed with racksadapted to engage said pinions; clamping means; and Washers interposedbe- 5 tween said clamping means and said standards.

7. In adjustable furniture, the combination of supporting-stand ards ashaft 3' on rnaled in said standards; pinions secured on said shaft 10by a spline-and-groove connection; brackets formed with racks adapted toengage said pin- I ions; clamping means; and Washers interposed betweensaid clamping means and said standards, said washers being secured onsaid shaft by a spline-and-groove connection.

Dated at Bloomsburg this 19th day of December, A. D. 1900.

\VILLIAM B. COGGER.

WVitnesses:

M. E. LOWE, E. R. FURMAN.

